Unable to Retrieve OAuth Client Credentials Token (Invalid ClientID)

API
11

So In powershell,

curl -Method POST "https://id.twitch.tv/oauth2/token?client_id=MYCID&client_secret=MYSECRET&grant_type=client_credentials"

or

Invoke-WebRequest -Method POST "https://id.twitch.tv/oauth2/token?client_id=MYCID&client_secret=MYSECRET&grant_type=client_credentials"

Should yield a token

Or jsut install curl instead!